Thomas k



T. K. ANDERSON.

Stovepipe Damper.

No. 63.196. Patented March 26, 1867.

gait 2h tstns gamut gift THOMAS I K. ANDERSON, OF HORNELLSYI LLE, NEW YORK,

Letters Patent No. 63,196, dated March 26, 1867, v I

IMPROVED STOVE-PIPE DAMPER,

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TO ALL WHOM IT MAY CONCERN:-

Be it known that I, THOMAS K. Annnnsom of Hornellsville, Steuben county, State of New York, have invented a new and useful improvement in Stove-Pipe Damper; and-I do hereby declare that the following is a full, clear, and exact description, which will enable others skilled in the art to make and use the same, reference being bad to the accompanying drawing, forming a 'part of this specification, in which- I Figure 1 is a longitudinal central section of a portion of a stove pipe with my imnroved dam er attachedn Figure 2 is aside view of the same showing the adjustable balanced lever.

Figure 3 is a side view of a portion of pipe showing a modificationofthe adjustable balanced-lever.

Similar letters of reference indicate like parts.

My invention consists in an improved self-adjusting stove-pipe damper, so constructed and arranged that the draught of the stove shall regulate the damper so as to. maintain a uniform fire..

' is the stove pipe in which the damper B is pivoted by a rod or arms, 0, inthe ordinary manner.- The damper B is made in the form of an ellipse, and it is pivoted at a point a little above its centre. D is an arm or stop attached to the lower end of the damper B, and which is of' such a length as, by coming in contact'with the side of the pipe A,.to prevent the damper from ever taking a vertical position. -To one end ofthe pivotingrod C is attached a short-tube, E, in whichworks the adjnstable'weighted lever F, by means-of which thedamper B may be adjusted to stand at the proper angle to giv'e a fire of the required intensity; thenif the draught of the stove should increase from opening a door, or from putting into the stove'more inflammable fuel, the effect will be-topartially close the damper B by the pressure of the heated air on the lower portion of the damper, partially shutting off the draught and keeping the fire at the required intensity. If,-0n theiotherhand, the draught should be diminished from any cause, the weighted damper will immediately open more widely, thus keeping the fire at the desired point. The weighted lever F may be kept in, the position in the tube E, in which it is placed, by a spring, G, as'shown in fig. 2, or by a set-screw, or in any other well-known manner. It'dsired, the lever F may be-solidly attached to or form a part of the pivoting-rod G, and the position of the damper be adjusted by a movable weight, H, susp ended from one arm oi? said lever, as shown in-fig. 3, and kept-in the desired positionby notch es formed in the said armof the lever. If desired, a small vent-hole, b, may be formed through the damper, or left around its edge, to guard'against the dampers being elosed'so tightly as to ""rce the gas or smoke out into the room.

Ielairn as new, and desire to secure by Letters Patent The pivoted damper B, stop D, tube l and weighted lever F, or its equivalent, combined to operate-together, and arranged with the stove pipe A, substantially as deseribed, for the purpose specified.

The above specification of my invention signed by me this third'duy of September, 1866.

' T. K. ANDERSON;

Witnesses Wu. F; MCNAMARA,

JAMES T. GRAHAM. 

